[1] A human being loses an average of 40 to 100 strands of hair a day. [2] A cough releases an explosive charge of air that moves at speeds up to 60mph. [3] Every time you lick a stamp, you consume 1/10 of a calorie. [4] A fetus acquires fingerprints at the age of three months. [5] A sneeze can exceed the speed of 100 mph. [6] Every person has a unique tongue print. [7] According to German researchers, the risk of heart attack is higher on Monday than any other day of the week. [8] After spending hours working at a computer display, look at a blank piece of white paper. It will probably appear pink. [9] An average human drinks about 16,000 gallons of water in a lifetime. [10] A fingernail or toenail takes about 6 months to grow from base to tip. [11] An average human scalp has 100,000 hairs. [12] It takes 17 muscles to smile and 43 to frown. [13] Babies are born with 300 bones, but by adulthood, we only have 206 in our bodies. [14] Beards are the fastest growing hairs on the human body. If the average man never trimmed his beard, it would grow to nearly 30 feet long in his lifetime. [15] By age sixty, most people have lost half of their taste buds. [16] By the time you turn 70, your heart will have beat some two-and-a-half billion times (figuring on an average of 70 beats per minute). [17] Each square inch of human skin consists of twenty feet of blood vessels. [18] Every human spent half an hour as a single cell. [19] Every square inch of the human body has an average of 32 million bacteria on it. [20] Fingernails grow faster than toenails. [21] Humans shed about 600,000 particles of skin every hour – about 1.5 pounds a year. By 70 years of age, an average person will have lost 105 pounds of skin. [B] HUMAN LUNGS [22] At rest, a person breathes about 14 to 16 times per minute. After exercise it could increase to over 60 times per minute. [23] New babies at rest breathe between 40 and 50 times per minute. By age five it decreases to around 25 times per minute. [24] The total surface area of the alveoli (tiny air sacs in the lungs) is the size of a tennis court. [25] The lungs are the only organ in the body that can float on water. [26] The lungs produce a detergent-like substance which reduces the surface tension of the fluid lining, allowing air in. [C] HUMAN HEARTS [27] Your heart is about the same size as your fist. [28] An average adult body contains about five quarts of blood. [29] All the blood vessels in the body joined end to end would stretch 62,000 miles or two and a half times around the earth. [30] The heart circulates the body's blood supply about 1,000 times each day.
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